VideoTexture: new VideoTexture.ImageFFmpeg to load and reload images.

The FFmpeg library allows to load image files. Although it is possible
to load images using the VideoFFmpeg class, it is not very efficient.
The new class VideoTexture.ImageFFmpeg is dedicated to image management.

Constructor:
-----------
VideoTexture.ImageFFmpeg('image_file_name')
  Opens the file but does not load the texture yet.
  The file name can also be a network address. It can also be a video
  file name; in that case only the first image is loaded.

Methods:
-------
refresh(True)
  Loads the image to texture. 
  You just need to call it once, the file is automatically closed after
  that and calling refresh() again will have no effect.

reload('new_file_name')
  Reloads the image (if new_file_name is omitted) or loads a new image.
  The file is opened but the texture is not updated yet, you need
  to call refresh() once to load the texture.

Attributes:
----------
status
  returns the image status:
    2 : file opened, texture not loaded
    3 : file closed, texture loaded

image
  returns the image data as a string of RGBA pixel

size
  returns the image size [x,y]

scale
  get/set the scale flag. 
  If the scale flag is False, the image is rescale to texture format
  using gluScaleImage() function, slow but good quality.
  If the scale flag is True, the image is rescaled using a fast but
  less accurate algorithm.

flip
  get/set Y-flip flag.
  Set to True by default as FFmpeg always provides the image upside down

filter
  get/set filter(s) on the image.

Example:

1 files changed, 2 insertions, 0 deletions

diff --git a/source/gameengine/VideoTexture/blendVideoTex.cpp b/source/gameengine/VideoTexture/blendVideoTex.cpp
index 530ec7a85dd..b38882f8164 100644
--- a/source/gameengine/VideoTexture/blendVideoTex.cpp
+++ b/source/gameengine/VideoTexture/blendVideoTex.cpp
@@ -119,6 +119,7 @@ static PyMethodDef moduleMethods[] =
 
 #if WITH_FFMPEG
 extern PyTypeObject VideoFFmpegType;
+extern PyTypeObject ImageFFmpegType;
 #endif
 extern PyTypeObject FilterBlueScreenType;
 extern PyTypeObject FilterGrayType;
@@ -139,6 +140,7 @@ static void registerAllTypes(void)
 {
 #if WITH_FFMPEG
 	pyImageTypes.add(&VideoFFmpegType, "VideoFFmpeg");
+	pyImageTypes.add(&ImageFFmpegType, "ImageFFmpeg");
 #endif
 	pyImageTypes.add(&ImageBuffType, "ImageBuff");
 	pyImageTypes.add(&ImageMixType, "ImageMix");